Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors

Details Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors Photon-counting optical coherence-domain reflectometry using superconducting single-photon detectors

2008-10-06

arxiv.org/abs/0810.0980v1

Physics

Quantum Physics

14 pages, 10 figures

Scientific paper

10.1364/OE.16.018118

We consider the use of single-photon counting detectors in coherence-domain imaging. Detectors operated in this mode exhibit reduced noise, which leads to increased sensitivity for weak light sources and weakly reflecting samples. In particular, we experimentally demonstrate the possibility of using superconducting single-photon detectors (SSPDs) for optical coherence-domain reflectometry (OCDR). These detectors are sensitive over the full spectral range that is useful for carrying out such imaging in biological samples. With counting rates as high as 100 MHz, SSPDs also offer a high rate of data acquisition if the light flux is sufficient.

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